There are 75 stickers in Box P and 40 stickers in Box Q.
Some stickers are transferred from Box P to Box Q.
Box P has 15 more stickers than Box Q.
How many stickers are transferred from Box P to Box Q?
|
Box P |
Box Q |
Before |
75 |
40 |
Change |
- ? |
+ ? |
After |
1 u + 15 |
1 u |
Total number of stickers
= 75 + 40
= 115
Total number of stickers in the end = 1 u + 15 + 1 u = 2 u + 15
The total number of stickers at first and in the end remains unchanged.
2 u + 15 = 115
2 u = 115 - 15 = 100
1 u = 100 ÷ 2 = 50
Number of stickers that are transferred from Box P to Box Q
= Number of stickers in Box Q in the end - Number of stickers in Box Q at first
= 50 - 40
= 10
Answer(s): 10